Lesson: Subtracting Ones From Teen Numbers Mathematics • 1st Grade

In this lesson, we will learn how to subtract a one-digit number from a teen number when we do not cross a ten by subtracting ones.

Lesson Plan

Students will be able to

use models to help subtract a single-digit number from a teen number,
partition the two-digit minuend to help subtract a single-digit number from a teen number,
count back to help subtract a single-digit number from a teen number,
solve word-based problems involving subtraction of single-digit numbers from teen numbers.

Q1:

Michael drew this model to help him subtract.

Which of these has the same answer as ?

What is ?

Q2:

Look at how Jennifer subtracted 3 from 15.

Fill in the blank: .

Q3:

What is 18 take away 4?